Needle-controlling mechanism for sewing-machines.



No. 709,3l0. Patented Sept. I6, l9 02.

J; V. EVES NEEDLE CONTROLLING MECHANISM FOR SEWING MACHINES.

(Application filed Feb. 7, I902.)

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(No Model.)

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NEEDLE CONTROLLING MECHANISM FDR SEWING MACHINES.

(Application filed Feb, 7, 1902.) v

' (No .Nlndel.) 3 Sheets-Sheet 2.

WITNESSES. INVENTOR Pateaited Sept. l6, I902. I .1. V.E'VES.- I I NEEDLECONTROLLING MECHANISM FOR SEWING MACHINES.

(Application filed Feb. '7, 1902.)

3 Sheets-Sheet 3.

(No Model.)

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UNITED. STATES 'ATENT FFICE.

JOSHUA VALENTINE EVES, OF BELFAST, IRELAND.

NEEDLE-CONTROLLING MECHANISM FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 709,310, datedSeptember 16, 1902.

Application filed February 7, 1902. Serial No. 93,095. (No model.)

1'0 all whom it mag concern:

Be it known that I, JOSHUA VALENTINE EVES, a British subject, andaresident of Belfast, in the county of Antrirn, Ireland, have inventedcertain new and useful Improvements in Sewing-Machines, of which thefollowing is a specification.

This invention relates to needle-controlling mechanism forsewing-machines of that class or type in which embroidery-stitching ismade by a needle traversing from side to side as the material is fedbelow it and commonly known as a zigzag machine, and it is designed toimprove the several parts of the machine to render them more readilycontrolled, to adjust them to vary the work as required.

The invention comprises mechanism for setting the stitch relatively to acenter or zero line and for adjusting the Width of the stitch, incombination with mechanismfor traversing or feeding the material throughthe machine to enable certain figures in embroidery-patterns to bemade-such, for instance, as leaves and flowers and circular, oval,triangular, and diamond shaped spots.

The invention will be fully described with reference to the accompanyingdrawings, in which the several parts of the machine are shown more orless detached to enable them to be more clearly illustrated anddescribed, the Whole being used in conjunction or in combination tocomprise a complete machine for the purposes indicated.

Figure l is a diagram of Work performed by the machine. Fig. 1 is adiagram indi cating the position of the stitching in reference tozero-lines 1 1, 2 2, and 3 3; Fig. 1, a

side elevation of the mechanism for controlling or operating theneedle-bar to give it lateral traverse either across a zero-line 1 1 orto inner side of zero-lines 2 2 3 3, Fig. 1 Fig. 2, a transversesectional elevation of same on line w as, Fig. 1; Fig. 3, an enlargeddetailed elevation of part of Fig. 1; Fig. 4E, a side elevation ofmechanism for controlling the position of the needle-bar and foraltering' the length of stitch when the machine is at work; Fig. 5, anend elevation of Fig. 4.

The frame A of the machine, the driving mechanism, and the zigzag orlaterally-traversing needle-bar B are all of the ordinary or usualconstruction in this type of sewing-machine and are partly omitted fromthe drawings. The needle-bar B is connected to the radius-lever O, bywhiclrits throw or traverse is adjusted in the usual Way bya link I),one end of which is secured toaslotorgroove c in the lever, the lever 0being oscillated by the cam C,of any desired or convenient shape, or itsequivalent. The center or pin d, upon which the radius-lever C (seeFigs. 1 and 2) is pivoted, is made movable or adjustable, so that it maybe placed in one of three positions, as desired. The distance betweenthe two extreme positions is equivalent to the length of traverse of thecam G, by which the radius-lever O is oscillated. When the pivot d is inthe center position, the traverse of the needle-bar B will be across acentral or zero line 1 1, Fig. 1 when'in theoutside position at one sidethe traverse of the needlebar will be from the zero-line 2 2 to theright of it, and when in the other outside position from the zero-line 33 to the left of it. The pivot 61 is carried at the end of alever D,fulcrumed upon the stud d, mounted in a bracket a, fixed to the framingA. A lever E, held up by a spring, is pivoted at e and is provided withnotches e c e cutin it corresponding to the three required for positionsof the pivot d. A projection d on the lever engages with the notches e 66 Then by moving the lever D the movement of the needle-bar B inrelation to the zero-lines 1 1 22 3 3 can be altered at will by theoperator.

The length of oscillation of the needle-bar B and the consequent lengthof stitch is determined by the position of the end of the link 12 in theradial slot 0 in the oscillating lever 0. To enable the operator to varythe length of stitch at will as the Work proceeds, a knee presser orlever F is pivoted to the under side of the machine-table, by which theend of the link I) can be moved to and fro, as required. (See Figs. 4and 5.) Thekneepresser F is provided With a flat face, against which theknee of the operator engages and is of cranked or L shape, witha knob orprojection f, which rises and falls as the lever moves upon its pivotsf. To the frame A are pivoted two levers G G, affixed to a common centeror pin g. The lever G engages with a rod g, by which it is connectedwith with the end of the link I). When, therefore,

the knee-presser F is moved to the right by the pressure of the knee ofthe operator, the knob or projection f and the rod g are raised by thelever G. The same movement depresses the lever G, the link 9 and by themthe end of thelink bin the radial slot 0. When the pressure is Withdrawnfrom the presser F, the movement of the levers G G is reversed by theaction of the spring g Two screws 9 g are inserted in the levers G G tolimit the movement of the levers in either direction. In the positionsshown in Figs. 4 and 5 the crossover or zigzag stitch is made as narrowas need be, and when by the action of the knee-presser F the end of thelink bis moved to the bottom of the slot 0 the full width of stitch ismade.

What I claim as my invention, and desire to protect by Letters Patent,is

1. In needle-controlling mechanism for sewing-machines, the combinationof a traversing needle-bar, a radius-lever, a link connected with theneedle-bar and radius-lever,a cam for actuating said radius-lever,asecond lever having a pivot for the radius-lever and a projection, anda springactuated notched lever, the notches of which are adapted to beengaged by said projection.

2. In needle-con trolling mechanism for sewing-machines, the combinationof a traversing needle-bar, a radius-lever, a link connected with theneedle-bar and radius-lever, a cam for actuating said radius-lever, asecond lever having a pivot for the radius-lever and a projection, aspring-actuated notched lever, the notches of which are adapted to beengaged by said projection, and means for changing the position of saidlink said means including a knee-operated device.

3. In needle-controlling mechanism for sewing-machines, the combinationof a traversing needle-bar, a link pivoted to said needlebar, aradius-lever to which said link is connected, a cam for actuating saidradius-lever,

a hand-lever having a pivot for said radiuslever and a projection at itslower end, a lever having notches upon its upper side adapted to receivesaid projection said lever being carrying at its lower end the pivotupon which I the radius-lever oscillates, a secondary lever E providedwith three notches, a projection d on the lever D to engage the notchesin the lever E to determine the position of the center upon Which theradius-lever oscillates, a lever G by which the. position of the link I)can be varied relatively to the radius-lever O, the link g connectingthe lever G with the link I), the lever G securedto the spindle of thelever G, the knee-presser F and levers ff connected to the lever G bythe rod g by which the levers G G are operated, substantially asdescribed.

5. In needle-controlling mechanism for sewing-machines the combinationwith the traversing needle-bar B, the radius-lever O by which it isoscillated, a cam such as G to oscillate the lever, and the link I)connected to the needle-bar at one end and to the radiuslever at theother end, of a pivoted lever D carrying at its lower end the pivot uponwhich the radius-lever oscillates, a secondary lever E provided withthree notches, a projection d on the lever D to engage the notches inthe lever E, the link 9 connecting the lever G with the link b, thelever G secured to the spindle of the lever G, the knee-presser andlevers ff connected to the lever G by the rod g by which the levers G Gare operated and feed mechanism by which the Work is carried through themachine, substantially as described.

In witness whereof I have hereunto signed my name, in the presence oftwo subscribing witnesses, this 22d day of January, 1902.

JOSHUA VALENTINE EVES.

Witnesses:

PETER SHAW, GEORGE TWEED.

